Motor-driven ventilating unit mounting



Dec. 2, 1952 K. J. A. NELLVEN ET AL MOTOR-DRIVEN VENTILATING UNIT MOUNTING Filed Nov. 18. 1947 v ai /7/6 /4' 2 SHEETS-SHEET l @www Dec- 2, 1952 K. J. A. NELLVEN Er AL 2,619,893

MOTOR-DRIVEN VENTILATING UNIT MOUNTING 2 SHEETS-SHEET 2 Filed NOV. 18, 1947 Patented Dec. 2, 1952 MOTOR-DRIVEN VENTILATING UNIT MOUNTING Karl Johan Arvid Nellvn and Karl Erik Hjelm,

Stockholm, Sweden, assignors, by mesne assignments, to Aktiebolaget Enkopings Verk- Stader, Enkoping, Sweden, a corporation of Sweden Application November 18, 1947, Serial No. 786,658 In Sweden November 27, 1946 4 Claims.

Our invention relates to motor-driven ventilating units, and is especially concerned with mounting such Ventilating units at an opening or duct in a wall on an enclosure.

One of the objects of our invention is to provide an improved mounting for a motor-driven fan or Ventilating unit which is constructed in such manner that the Ventilating unit can be readily detached from and secured in position on the mounting structure to facilitate inspection and cleaning of the Ventilating unit.

Another object of our invention is to provide an improved mounting for a motor-driven fan or Ventilating unit in which the electrical connection for the fan motor is automatically made and broken when the Ventilating unit is positioned on the mounting structure and detache therefrom.

A further object is to provide a mounting for motor-driven fans or ventilators which is constructed in such manner that it can be positioned and secured in place at openings or ducts of different cross-sectional area in a range normally encountered in building practice.

The novel features which we believe to be characteristic of our invention are set forth with particularity in the claims. The invention itself, however, both as to organization and method, together with further objects and advantages thereof, will be better understood by reference to the following description taken in connection with the accompanying drawings in which:

Fig. 1 is a view taken at line I--I of Fig. 3, partly in section and partly in elevation, of a Ventilating unit embodying the invention;

Fig. 2 is a fragmentary sectional View, taken at line 2-2 of Fig. 3, to illustrate parts of the Ventilating unit more clearly;

Fig. 3 is a fragmentary vertical sectional View, taken at line 3-3 of Fig. 1;

Fig. 4 is a front elevation of parts of the ventilating unit shown in Figs. 1 to 3;

Fig. 5 is a sectional View taken at line 5-5 of Fig. 4;

Fig. 6 is a top plan View of a detail of the parts shown in Figs. 4 and 5;

Fig. 7 is a front elevation of another arrangement of parts like those shown in Figs. 4 and 5;

Fig. 8 is a vertical sectional view taken at line 8-8 of Fig. 7;

Fig. 9 is a fragmentary sectional View corresponding to Fig. 5 illustrating a modification of the invention;

- Fig. 10 is a. fragmentary front elevation of the 2 details shown in Fig. 9 and which corresponds to the View illustrated in Fig. 4;

Fig. 11 is a view similar to Fig. 4 illustratin another modication of the invention; and

Fig. 12 is a Vertical sectional View taken at line I2-I2 of Fig. 11.

Referring to Figs. 1 to 3, We have shown our invention in connection with a room Ventilating unit having an annular housing ii) formed by an inner cylindrical sleeve or wall member II, an annular member I2 which is L-shaped in section and forms the front and outer side walls and a rear plate I4. The front end of the cylindrical sleeve II telescopically fits over a ange or collar I5 of the annular member I2` and these parts, together with the rear plate i4, are held in assembled relation by hollow sleeves IB, the front ends thereof being grooved at I 'I to receive the peripheral edges of apertures formed in the front of the annular member I2.

and the reduced rear ends thereof being externally threaded to receive tightening nuts I8 which bear against the rear plate I4.

The cylindrical sleeve I I denes an air passageway within which is centrally disposed a fan I9 fixed to a shaft of an electric motor 20 having a major portion thereof extending outside the air passageway from the rear of the housing I0. The motor 2B is resiliently carried by the housing Ii) by a number of spaced apart reverse bent.

members 2I having the inner ends thereof fixed at 22 to the cylindrical sleeve II and the outer ends thereof, which are desirably covered at 2Ia with rubber or like material, rigidly fixed to the casing of the motor 20 by a clamp 23. Within the housing I0 is disposed control mechanism for controlling the motor 20 and the position of a movable shutter 24 arranged at the front of the housing and overlying one end of the air passageway. As best shown in Fig. 3, such control mechanism includes a switch 25 removably secured in any suitable manner to the rear plate I4 and from which current is supplied through leads 26 and 21 to the kmotor 20. The switch 25' 28 the closed end of whichis apertured to receive the.,

connecting plug 30. The portion of the plug body remote from the pins 3| rmly rests against the inner surface of the front of the casing I6 and an intermediate recessed portion thereof is notched `to" receive an ear or tabl 37 which is formed at the apertured closed end of the cap 36, thereby locking the connector 30 in position and' preventing turning movement thereof Vsoasto denitely position the spaced apart connector pins 3l.

The switch 25 is providedvwith; anA actuating member 38 to which is fixed the `upper end of a control rod 39 for controllingthe operation of the motor 2D. The control rod extends downwardly through the housing I6, the lower part beingA accessible at the exterior `of the .'housing, as seen in Fig. 1. arranged to simultaneously control the motor 2D and adjust the position of the shutterV 24'. In' order to simplify the drawing, the mechanism operativelyassociating the control rod 39 and the shutter 24 has not beenillustrated. However,

The control rod 39 'maybe Y such mechanism may be of Vany suitable typeand like that describedv in an application of' Karl J. Walhborg, Serial No. 601,444, filed June 25, '1945, the disclosure of which may be considered as beingincorporated in this application.

In accordance'with one Vphase of our invention we provide an adjustable mounting unit i0V for a ventilator like that just described for rigidly and snugly Vmounting the ventilator in position in different Vsize openings or ducts inf walls of existing building structures or dwellings. As shown in Fig. 1v the mounting" unit 4U comprises a hollow rectangular frame 4I provided with top and bottom positioning and locking membersl 42 and 43V which are received by openings 44 and 45, respectively, formed in an L-shaped annular rim 46 fixed-to anopening or duct 41 of a wall 48. Rims or facingplates of annular form and likethe rim 46'are' usually employed in openings or ducts in existing building structures, and this is especially true in kitchens in which such facing plates, not originally intended for use in mounting a ventilator, are provided with diametrically opposed top and'bottom openings for some purpose, such as, for example', to position a rotatable damper.

The frame 4 I: is 'adapted to overlie the opening or duct against which it is positioned and bear against the front face `of the rim 4-6. The positioning and locking members 42 and 43 are adjustable to and from `the front face of the rim and the top member 42de also^vertic`ally adjustableto accommodate the ventilator associated with the frame 4I to `openings or ducts which vary in sizeover'the range usually""encountered i'n walls'of existing building structures. The bottom positioningiand locking member 43 vis inthe form of apin which depends downwardly from the underside 'of .a'plat'e oribridge member 49 intermediate the ends thereof; as b'est shown in Figs. 4 and 5.

The .bridge member 49 spans the. gap between afpairof spaced apart tabs 56 extending rearwardly fromV theabottom horizontal arms of the frame 4I, thebridge member being, removably secured to theV tabs, as'by cap screws-5I, for example; As best seen in Figi 6,'the bridge member is formed with elongated or oval shapedopenings 52 through which the cap screws 5I- pass, so that the bridge member and pin 43 at theunder sidethereof can be adjustedy to the desired position inthe mouthV of the opening orduct 47 and theapin. in vertical alignment with the bottom openn'g;45 in therrim 46,A thereby, enabling the;v

pin 43 to be accurately positioned with respect to the bottom opening 45.

The top positioning and locking member 42 is in the form of an elongated cap screw which is vertically'adjustable in a block 53'. Thef'block 53 in turn is secured by cap screws 54 to the frame 4 I., two vertical rows of opening 55 being provided onthe. frame for the screws so that the block can befattached to the frame at different vertical positions. For each particular size opening or duct towhich the frame 4I is to be attached, the block 53f'is .positioned at. the most convenient height on the frame by the screws 54 and the nal adjustment is made by the cap screw 42 itself to lock the frame rigidly iniposition. The cap screws 54 also Vserve to adjust the position of the block 53 to and. from. the front face of the rim 4B so that the top` locking and positioning member 42 can be readily aligned with the top opening 44 in the rim or facing plate.

When usingY the ventilator mounting of the invention, the rectangular frame 4I rst'attached to the mouth of an opening or ductl 4B byadj'usting the cap screws 5I in the bridge member 49 and the cap screws 54 for thebl'ock 53-`so that the pin 43 and elongated screw 42 are therequisite lateral distance from the frame 4I and in vertical alignment with the rim openings 44 andY 45,'respectively. In such adjusted position of the pin 43 and locking screw 42, the frame 4I snugly fits against the front face of 'the rim or facing plate 46. The pin 43 is inserted into the bottom rim opening 45 and the cap screw 42 is then moved vertically upward on the block 53 so that the upper end thereof passes' into the top rim opening 44, thereby securely attaching the frame 4l to the mouth of the duct 41.

When the frame unit 40 is secured in position in the duct 41- the ventilator is thenV mounted thereon. This is accomplished by providingthe frame 4I with top and bottom pins 56 which pass' through the'hollow sleeves I'6land are formed with threaded ends-to receive tightening nuts 51 at the front of thehousingV l0, as best shown'in Fig. 1. The receptacle or contact socket 32 previously described is fixed tothe frame 4I, as indicated at 58 in Fig. 4, the position thereof being such that the pins 3l of the connector 30 will readily move into the contact sleeves or socket apertures 59 when the ventilator is'moved rear-l wardly into position on the pins 55. The housing I il is suitably notched at theY upper part thereof to provide a gap for a conduit Ell through which theleads 33 and 34 are adapted to extend.

In Figs. 7 and 8 we have illustrated an embodi-' mounted directly in the wall opening, thereby,

avoiding the necessity of providing a rim or facing plate 46 like that Shown in the'first described embodiment. As seen in Figs. 7 and 8 each side or leg of the frame 4 I a is L-shaped in section and is adapted to be secured directly in the mouth lof an opening or ductin any suitable manner. Hence,Y the frame 4Ia' takes the place of the-- rim 46 and frame 4I in the embodiment illustrated in Fig. 1. In other respects, the frame 41a is like the frame 4I described above 'inthat' a receptacle or contact socket 32 is fixed to the upper partv thereof to receive the pins 3l of the connector 3l] and threaded studs'.- 56V proj ect outwardly ltherefrom upon whichthe ventilator is positioned and carried.

The top locking and positioning member 42 of the mounting unit may take a variety of forms. In Figs. 9 and 10 is shown a modification in which the bent or hooked end 42h of a threaded bolt 6| servesasa top locking and positioning member of a mounting unit cob. The upper cross arm of the rectangular annular frame lllb ls provided with a vertically disposed elongated slot B2 through which the bolt 6! passes, the outer end of which receives a tightening or wing nut 63. By grasping 4the wing nut 63, the bolt t! can readily be moved upwardly in the slot 62 to cause the hooked end 42h to pass into the top opening 44 of the rim or facing plate 4S. When the hooked endb is in its locking position the wing nut 63 can be manually tightened on the bolt 6| to secure the frame Mh rigidly in position in the mouth of the wall opening. Since the slot 62 is more or less centrally positioned at the upper cross arm of the frame 4th, the studs 56 upon which the ventilator is positioned and carried cannot be provided at the center regions shown in Fig. 4 and .are desirably removed from such center regions and positioned, for example, at diametrically opposite corners of the frame Mb of the mounting unit.

In certain instances it may be necessary to provide for greater vertical adjustment of the locking and positioning members of the mounting unit than that afforded alone by the top locking and positioning member, as in the nrst described embodiment and in the modification of Figs. 9 and 10. In such case the bottom locking member may also be arranged so that it is vertically adjustable on the mounting unit. Such a modification is shown in Figs. ll and 12 which is generally like the embodiment first described. However, in addition to providing a top locking and positioning member d2 vertically adjustable on a block 53 which in turn can be fixed by cap screws 54 to the desired height on the top cross arm of the frame 4I, the bottom locking and positioning member 43d is also vertically adjustable.

'I'he bottom locking member 'i3d is in the form of an elongated cap screw which is vertically movable in a block 64 positioned at the rear face of a plate 55 which projects upwardly from the bottom cross arm of the frame 4I and is fixed thereto at 56. rEhe plate 55 is relatively narrow and formed with two vertical rows of openings 61 adapted to receive cap screws 68 threadedly secured to the block 64. By providing the openings 61 in thc plate 65 it is possible to adjust the bottom locking and positioning member 43d vertically, which, together with the vertical adjustment effected by the top locking and positioning member 42d, provides an extreme-flexible mounting unit for ventilators of the type described.

By adjustment of the cap screws 68 on the block 64 the latter is moved laterally to and from the rear side of the frame il to facilitate bringing the locking member 43d in vertical alignment with the bottom opening i5 of the rim or facing plate 46. By providing a plate 65 which is relatively narrow, the throttling effect of the mounting unit of Figs. 11 and l2 is minimized when it is attached to an existing duct or wall opening whose height is relatively small and a substantial part of the plate 55 projects or extends upwardly above the 'bottom cross arm of the frame 4l.

In view of the foregoing it will now be understood that we have provided an improved mounting for Ventilating units which comprises a frame adapted to be positioned at the mouth of an opening or duct in a wall, the frame including structure, such as the guide pins 55, for example, upon which Ventilating unit is bodily supported and detachable therefrom. The Ventilating unit is reticularly when such a unit is mounted at an opening of a wall in a kitchen and the parts thereof tend to become coated with grease.

By fixing the connecting plug 30 to a part of the casing iii and the receptacle or outlet socket to the mounting frame in such a manner that the pins 3l automatically move into and out of engagement with the contact sleeves 59 when the Ventilating unit is slidably positioned on the guide pins 55 and removed therefrom, a housewife does not need to tamper with an electrical connection for the fan motor 2li when the unit is removed for cleaning and inspection and again mounted in position.

In the embodiment 0f Figs. 7 and 8 the frame member i la is formed to be permanently secured in position at the mouth of an opening or duct in a wall at the time the latter is 'being erected. In such case the frame member may be wedged or locked in position by suitable cement work or by turnable stay members which cooperate with the frame member and are directed backward and briclied up or otherwise locked in position by masonry.

In its broader application the mounting unit of the invention is especially useful for installation in openings or ducts of diiferent cross-sectional area in a range normally encountered in building practice, and in such case the frame is provided with elements to secure the same in position at the opening or duct, at least one or both of the elements being adjustable to accommodate and fit the frame to openings of different cross-sectional area between the minimum and maximum size in the range in which it is adapted to be used.

Although we have shown and described several embodiments of our improved mounting unit for motor-driven fans or ventilators, we do not wish f to be limited to the particular arrangements set forth, and we intend in the following claims to cover all modifications which do not depart from the spirit and scope of our invention.

What is claimed is:

1. The combination with a Ventilating unit comprising a fan and driving motor therefor, of a frame adapted to be mounted at the mouth or opening of a passage or duct in a wall of an enclosure, fastening means at one side of said frame to mount the latter is position at the mouth or duct, said fastening means comprising pins in vertical alignment with one another and adapted to cooperate with diametrically opposed regions in the wall of the duct or passage, at least one of said pins being vertically adjustable with respect to said frame, a mechanical coupling including cooperating iirst and second means and an electrical connection including cooperating first and second means, the first means of said mechanical coupling and first means of said elecdisposed at the-.sideofy said frame opposite from thatofsaid fastening means,- and the second means ofY said mechanical coupling and second means .of said-' electrical connection comprising stationary parts off said Ventilating unit.

2. TheI combination set forth in claim 1 which further includes an element upon which the lower piniscarried, and means for mounting said ele, ment von said frame so that the element is adjustable toward and from said frame.

3; The combination With a Ventilating unit comprising afan andv driving motor therefor, of a. frame adapted to be mounted atthemouth oropeningof` a passage or duct ,in a Wall of an enclosure, fastening v means at one side of said frarriev to;mo untthel'atter in position at the mouthor duct, said `fastening means vcomprising a Pin adapted to cooperate with a wall region of the v duct or passage, an element, means for mounting said element in diierent vertical positions .on said frame, said element having an opening= threadedly receiving said pin, a mechanical coupling including cooperating first and second means and an electrical connection including cooperating rst and second means, the rst means of said mechanical coupling and rst means ofV said electrical connection comprising stationary parts disposed at the side of saidl frame opposite from that of said fastening means, and the second means -of said mechanical coupling andsecond means of Said 4electrical connection comprising stationary parts ofA said Ventilating unit.

4; The combination with a Ventilating unit comprising a fan and driving motor therefor, of a` frame adapted to be mounted at the mouth or opening of a passageor lduct in a wall of an enclosure, fastening means at one side of said frame tomount; the latter in position at the mouth or duct, mechanical coupling comprisinga plurality 81 ofV parallel Y pins `in .spaced apart relation; which are xed to and project into the enclosure from saidframe and a plurality of similarly spaced apart sleeve members adapted to be received bysaid pins, said Ventilating unit comprising a casing in which such sleeve members are mounted,

an electrical connection comprising a contact socket or receptacle having openings which is fixed to said fra-me and a connector or connectingY plug'lcarried by said casing, said pins and contact socket or receptacle comprising stationary parts disposed at the side. of said frame opposite from that of said fastening means and` said sleeve members `and connector orconnecting plug comprising stationary parts of said ,ven-

tilator unit, and said connecting plug including elements adapted to nt into the receptacle operi-V- ing and parallel to said pins when said sleeve members are received by said pins. P

KARL JOHAN ARVID NELLVEN. KARL ERIK HJELM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

